A group of 68 lawmakers yesterday sent a letter to the CFTC, demanding that immediate position limits be promulgated under the Dodd-Frank bill. The lawmakers wrote that the rule is a year late, noting that Congress had determined "that speculative position limits are an effective and critically important tool to address excessive speculation" in U.S. oil and gasoline markets.Members of Congress pointed out that it is the CFTC's duty to ensure that oil and gasoline prices are fair, and that markets "operate free from fraud, abuse, and manipulation." The letter also mentions that oil and gas prices are higher today than they were in 2009, when the national average price for a gallon of gas was only $1.90.This point is very similar to the on...